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Finding the Fourth Proportional to 253,134.40, 379,590.89 and 120,052.72

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Solution

The fourth proportional to 253,134.40, 379,590.89 and 120,052.72 is: 180,026.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,134.40 : 379,590.89 = 120,052.72 : x
  2. Step 2: Convert to fraction form
    253,134.40/379,590.89 = 120,052.72/x
  3. Step 3: Cross multiply
    253,134.40x = 379,590.89 × 120,052.72
  4. Step 4: Simplify right side
    253,134.40x = 45,570,918,831.72
  5. Step 5: Solve for x
    x = 45,570,918,831.72/253,134.40
  6. Step 6: Final answer
    x = 180,026.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.